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Plaza Huincul, nestled within the Neuquén Province of Argentina, occupies a geographically significant position within the broader Patagonia region. Located at approximately -38.9338° latitude and -69.1987° longitude, the city sits at an elevation of roughly 450 meters (1,476 feet) above sea level, contributing to a cooler climate compared to lower-lying areas. The surrounding landscape is dominated by the Andean foothills, characterized by rolling hills, grasslands, and sparse forests of *Nothofagus* species. This terrain influences local wind patterns, often channeling breezes through the valley where Plaza Huincul is situated. The city’s proximity to the Limay River, a vital waterway for the region, provides a source of water and influences local humidity. Neuquén Province is a major oil and gas producing region, and Plaza Huincul itself is situated within a zone of significant hydrocarbon extraction activities. This proximity to industrial operations, including oil wells, refineries, and transportation infrastructure, is a key factor shaping the city’s air quality profile. The urban–rural gradient is relatively sharp; Plaza Huincul transitions quickly from a small urban center to agricultural lands and then to the more rugged, sparsely populated Andean landscape. The valley setting, combined with the regional industrial activity, creates a localized environment where air pollutants can accumulate, particularly under certain meteorological conditions. The prevailing westerly winds, originating from the Andes, can carry pollutants both into and away from the city, depending on atmospheric stability.

Plaza Huincul experiences a distinct seasonal cycle that significantly impacts its air quality. The region’s climate is characterized by cool, wet winters and mild, drier summers. During the winter months (June-August), cold air masses frequently settle over the area, leading to temperature inversions. These inversions trap pollutants near the ground, resulting in periods of stagnant air and potentially elevated concentrations of particulate matter and other emissions from heating sources and industrial activity. Fog is also common during this period, further exacerbating the issue by reducing atmospheric mixing. Spring (September-November) brings a gradual warming and increased wind speeds, which help to disperse pollutants, leading to improved air quality. Summer (December-February) generally sees the best air quality, with drier conditions and more frequent wind events. However, occasional heatwaves can still lead to localized ozone formation. Autumn (March-May) marks a transition period, with decreasing temperatures and increasing humidity, which can sometimes lead to localized pollution episodes. Sensitive groups, such as children, the elderly, and individuals with respiratory conditions, should exercise caution during the winter months, limiting outdoor activities on days with persistent fog or stagnant air. During the warmer months, while generally better, prolonged exposure during heatwaves should also be minimized. The agricultural practices in the surrounding areas, including the use of fertilizers and pesticides, can also contribute to seasonal fluctuations in air quality, particularly during planting and harvesting seasons.